Exciton Energy Transfer-Based Quantum Dot Fluorescence Sensing Array: “Chemical Noses” for Discrimination of Different Nucleobases

2014 ◽  
Vol 87 (2) ◽  
pp. 876-883 ◽  
Author(s):  
Jianbo Liu ◽  
Gui Li ◽  
Xiaohai Yang ◽  
Kemin Wang ◽  
Li Li ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Exciton Energy ◽  
Fluorescence Sensing

scholarly journals Electronic Coupling and Exciton Energy Transfer in CdTe Quantum-Dot Molecules [J. Am. Chem. Soc.2006,128, 10436−10441].

2007 ◽  
Vol 129 (34) ◽  
pp. 10613-10613 ◽  
Author(s):  
Rolf Koole ◽  
Peter Liljeroth ◽  
Celso de Mello Donegá ◽  
Daniël Vanmaekelbergh ◽  
Andries Meijerink
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Electronic Coupling ◽  
Exciton Energy ◽  
Quantum Dot Molecules ◽  
Cdte Quantum Dot

Peptide–quantum dot bioconjugates for label-free trypsin detection based on the exciton energy transfer

2012 ◽  
Vol 4 (12) ◽  
pp. 3932 ◽  
Author(s):  
Fen-Fen Zheng ◽  
Jian-Feng Wu ◽  
Guang-Chao Zhao
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Label Free ◽  
Exciton Energy

scholarly journals Electronic Coupling and Exciton Energy Transfer in CdTe Quantum-Dot Molecules

2006 ◽  
Vol 128 (32) ◽  
pp. 10436-10441 ◽  
Author(s):  
Rolf Koole ◽  
Peter Liljeroth ◽  
Celso de Mello Donegá ◽  
Daniël Vanmaekelbergh ◽  
Andries Meijerink
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Electronic Coupling ◽  
Exciton Energy ◽  
Quantum Dot Molecules ◽  
Cdte Quantum Dot

Quantum Dot Bioconjugates as Energy Donors in Fluorescence Resonance Energy Transfer Assays

2003 ◽  
Vol 773 ◽  
Author(s):  
Aaron R. Clapp ◽  
Igor L. Medintz ◽  
J. Matthew Mauro ◽  
Hedi Mattoussi
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Organic Dyes ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Genetically Engineered ◽  
Molar Ratio ◽  
Binding Assays ◽  
Specific Sequence ◽  
Donor Acceptor

AbstractLuminescent CdSe-ZnS core-shell quantum dot (QD) bioconjugates were used as energy donors in fluorescent resonance energy transfer (FRET) binding assays. The QDs were coated with saturating amounts of genetically engineered maltose binding protein (MBP) using a noncovalent immobilization process, and Cy3 organic dyes covalently attached at a specific sequence to MBP were used as energy acceptor molecules. Energy transfer efficiency was measured as a function of the MBP-Cy3/QD molar ratio for two different donor fluorescence emissions (different QD core sizes). Apparent donor-acceptor distances were determined from these FRET studies, and the measured distances are consistent with QD-protein conjugate dimensions previously determined from structural studies.

Towards Single-Molecule Diagnostics Using Microfluidic Manipulation and Quantum Dot Nanosensors

2007 ◽  
Author(s):  
Hsin-Chih Yeh ◽  
Christopher M. Puleo ◽  
Yi-Ping Ho ◽  
Tza-Huei Wang
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Single Molecule ◽  
Dna Sequences ◽  
Mutational Analysis ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Single Molecule Detection ◽  
Specific Analysis ◽  
Low Volume

In this report, we review several single-molecule detection (SMD) methods and newly developed nanocrystal-mediated single-fluorophore strategies for ultrasensitive and specific analysis of genomic sequences. These include techniques, such as quantum dot (QD)-mediated fluorescence resonance energy transfer (FRET) technology and dual-color fluorescence coincidence and colocalization analysis, which allow separation-free detection of low-abundance DNA sequences and mutational analysis of oncogenes. Microfluidic approaches developed for use with single-molecule detection to achieve rapid, low-volume, and quantitative analysis of nucleic acids, such as electrokinetic manipulation of single molecules and confinement of sub-nanoliter samples using microfluidic networks integrated with valves, are also discussed.

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